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DescriptionCompact BodyThe Haylou GST watch weighs only 42g and is designed specifically for sports. Easily check information with the 1.69" large touch control display.Variable Watch FacesWatch faces are continuously updated at the APP to meet diversified aesthetics. Customize the Haylou GST's watch face with your favorite picture.Exercise Data RecordingRecord steps, distances, calories, and other exercise data in real-time all day long. Set daily exercise goals and try to realize them.12 Workout ModesThe Haylou GST watch provides 12 built-in workout modes, covering the needs of most workout enthusiasts and recording different workout information.SpO2 TrackingHaylou GST supports testing your blood oxygen level at any time, so you can better understand your physical condition.* Monitoring data and results are for reference only, not for diagnosis and treatment.People who easily get low blood oxygen levelWhite-collars/studentsSports enthusiastPeople who snoreAll-day Heart Rate MonitoringMonitor your heart rate 24 hours a day with your health in mind. View recent heart rate data through mobile APP.* Monitoring data and results are for reference only, not for diagnosis and treatment.Smart Sleep MonitoringHaylou GST automatically recognizes your sleep status and records data such as sleep duration and depth without setting it manually.20 Days Battery LifeWith one full charge, you can use the Haylou GST watch for more than 9 days in daily mode and about 20 days in extended battery life mode.IP68 Waterproof and DustproofHaylou GST is IP68 waterproof and dustproof and can be worn for daily use. No need to worry about sweat and rain.Partner for Health and WorkHaylou GST is more than a watch. It is a good partner in the workplace and life with diversified functions that go with your phone.More FunctionsSpecifications:- Dimensions: 49.9x38.7x11.7mm- Strap width: 22mm- Watch weight (with strap): 42g- Display: 1.69" TFT display- Resolution: 240x280px- Bluetooth version: Bluetooth V5.1- Sensor: Heart rate sensor, motion sensor, blood oxygen sensor- Battery capacity: 220mAh- Battery life: Approx. 9 days - 24 hours heart rate monitoring- Compatibility: Android 6.0 and above; iOS 11.0 and above- Waterproof grade: IP68- Working temperature: -0°C~40°C- Synchronous data platform: Haylou Fun- Workout modesOutdoor running, indoor running, fast walking, cycling, climbing, spinning, yoga, free training, rowing, gymnastics, basketball, football